Ernie Ball Neck Rest

This is one of those great little relatively inexpensive things every guitar player should own. It's heavier than it looks at 207 grams and has rubber surfaces, so it has the correct balance as a table rest and definitely stays in place. It works just as it should in the "luthier's stand" position, and having a portable ad-hoc neck rest to place the guitar against a table is very convenient, instead of having to balance it carefully or place it on sofas or whatever.